I tried SeTool2Lite and it didnt, with FAR, when i go to Flash, i get an error

What error do you get?

Try following Wiza's fantastic tutorial here.

i tried that but i still dont unlock, it says inactive sim, the only that works is t mobile

Why two topics?
http://forums.se-nse.net/index.php?s=&...st&p=503389

If a phone is blocked then there's nothing that you can legally do.

im not sure if its blocked, if it was blocked it should say incorrect sim. And when i put other sims it says inactive sim but the signal bar is full

The thread here that you made indicated that the phone was blocked.

he mightve unblocked it or something

the thing is, i have two k750is with the same problem

one was bought from ebay, once my friend gave me

The one from Ebay was probably nicked! Thats why its been blocked.

Hehe cool